Just got a return phone call from a tech support guy at Wild 1 responding to my emailed questions about the clamp on the 575 bars. Here's what he said:
First off a recent order of bars they received were pushed through without stickers and that accounts for why some got them and some didn't. He went to explain, however, that the full length clamp is not a concern if the following is adhered to.
He said their problem with bars braking between the clamps stems not from road vibration but from stresses that accrue if a bike is straped down down by the handlebars (like while trailering the bike). He said that this stress will flex the bars between the risers and that this, combined with vibration while under this stress, is what will lead to the problem. Normal riding, however, will not. He also said the same applies to stock bars.
So, basically, when the warning sticker is applied it's a "cover all the bases" kind of thing so that bikes that are trailered won't have to worry about it. Apparently this stress problem can occur very very quickly in the above outlined circumstances.
If the bike isn't trailered you should be ok though. Even if the bike is trailered and you don't pull hard on the bars you should still be ok.
For what it's worth; given the guy's tone of voice and comfort with the facts and circumstances he was describing he didn't seem to be winging it and he felt comfortable with the facts as he was describing them. Based on this morning's phone call I'll still definitely eyeball the bars very closely whenever the fairing is off just to make sure. But I'll not be gutting everything immediately to do the job over again.